package com.cn.wanxi.servlet.user;

import com.alibaba.fastjson.JSONObject;
import com.cn.wanxi.model.UserModel;
import com.cn.wanxi.service.IUserService;
import com.cn.wanxi.service.impl.UserServiceImpl;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebServlet("/back/user/findById")
public class UserFindByIdServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //1.处理乱码
        req.setCharacterEncoding("UTF-8");
        resp.setCharacterEncoding("UTF-8");
        //2.接收前台传数据过来
        String id=req.getParameter("id");
        int aa = (id==null ? 0 : Integer.parseInt(id));//一个值，不封装
        //3.封装到实体类UserModel

        //4.服务逻辑层
        IUserService iUserService=new UserServiceImpl();

        //5.调用得到页面所需要的数据
        UserModel userModel=iUserService.finById(aa);

        //7.将数据转发到页面
        JSONObject jsonObject=new JSONObject();
        jsonObject.put("userModel",userModel);
        resp.getWriter().println(jsonObject);
    }
}
